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T. BROUGH.

V SAEEU ETOE. No. 284,373. Patented Sept. 4, 1883.

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GARBURETOR.

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Patented Sept. 4, 1883.

UNITED STATES PATENT OFFICE.

THOMAS J. BROUGH, or BALTIMORE, MARYLAND. r

CARIBURETORL SPECIFICATION forming part of Letters Patent No. 284,373, dated. September 4, 188?.

Application fi1edAprill1,1S83. (No model.)

To all whom it may concern Be it known that I, THOMAS JAMES BROUGH,

acitizen of the United States, residing at Balsuch proportions as will render the resulting mixture combustible and fitfor, use as an illu:

minating or heating agent.

Theinvention also relates to that class of.

devices which are designed to increase the illuminating power of coal or other-gas by min-i gling therewith the vapors of a hydrocarbon My invention consists in certain novel fea-j tures and in the combination of parts herein: set forth, and shown in the accompanying drawings, in which-.- I

Figure 1 is a longitudinal sectional view of the apparatus, and Fig. 2 a top view of the same. Figs. 3, 4, and 5 are sectional views of different parts; and Fig. 6 is a perspective view of a modified form of the apparatus, but. differing in construction and operation in no essential particulars.

In all the figures like letters refeito corre-, sponding parts.

. A is a metallic or other .case, within which I locate the'carburetor proper, B. This carburetor is of the ordinary construction, having a series of trays within, located one above the other, and communicatingwith each other by means of short tubes, as shown. The opening in the case shown at b is for the purpose of admitting the liquid hydrocarbon. It is here shown as being closed by a plug. The space between the carburetor and its case may be filled with water, or a packing of material designed to guard to some extent the carburetor from suddenatmospheric changes, as is well known, or to make it fire-proof when located within a building.

C is the fan-wheel for forcing air into and through the carburetor. It may be of the ordinaryconstruction, except that the wings thereof, instead of being attached to a solid shaft, as is commonly done, are attached toahollow sh aft or cylinder, through which the axial shaft (designed to carry the wheel) passes, and

throughthis shaft is passed'a pin, a, to one end of which is attached a spiral spring, 0, said spring being also rigidly attached to the pe 2 if desired.

d, d, d (Z and d are-pipes for the passage of the air or gas to be carbureted.

Thewheel may be dispensed with when gas isbeing carbureted, as ordinarily the pressure in the gas-mains will be sufficient to acco'mplish the purpose. All these pipes are-provided with suitable cocks, as shown, whereby I the air may be admitted to one tray or to all the trays, according as more or less lights are to be used-as, for instance, if but five lights are to be used the air or gas may be admitted only through the pipe (1, thereby utilizing the tray'a; and if ten lights are to be lighted another cock, d may be opened and the tray a utilized, and for fifteen lights open (1, and so on to' the full capacity of the carburetor.

v The pipe F is the eduction-pipe for. convey-- ing the carbureted air or gas from the carbu= retor to the burners, or to a gas-holder when one is used. The one here shown is peculiar in construction, and will be more fullyset forth hereinafter. In this eduction-pipehere shown is the valve F for shutting off all exit for gas from the carburetor. The valve 9 in pipe F is operated by the lever g and arm g, con,-

nected with the floating bell E, through the.

rise and fall of the latter, and the retort F for fixin the as said retort bein amere enlargement of the pipe F, or a retort constructed with heat-fiues passing through the same, whereby the passing gas may be highly heated by a burner receiving its supply of gas from either sideof the retort in the manner shown, the oil-vapor carriedby the gas or air being thereby further vaporized or fg'asified? in a manner well known. creased in volume, passes with great force Ioo The gas, being thus inthrough the inj ector f. Shown on an enlarged scale at Fig. 5.) The injector f is provided with a back pressure valve, f, and stopcock f and opens into the pipe F, connected with theholder D. This jet is represented in this figure ..as it appears before I inclose the same in a metallic sleeve. (Shown in Fig. 6.) This sleeve is screwed onto the pipe F, and has upon one side a projection or teat, designed to receive a short tube against back-pressure from the gas or carbureted air, and to open for the admission of atmospheric air, the amount of which admitted is governed by a stop-cock. The construction of this sleeve, the manner of attaching it to thepipe, the valve, its seat, and stop-cock, are all of ordinary construction and well known, and the manner of constructing them may be varied without departing from the spirit of my invention. The object of the jet is to draw in atmospheric air for the purpose of increasing the volume of the gas, and at the same time, should the gas be too rich, thereby producing a smoky flame, it may be further diluted by a second admixture of atmospheric air by means of the branch pipe H, in an obvious manner.

In some instances the retort need not be heat- 7 least, the action of the water (surroundingthe bell E) upon the warm or hot gases entering the holder, thereby preventing condensation, to some extent at least.

2 v v senses to require further description here. -I will add, however, that the eduction-pipe mayh'ave inserted therein, at a point near its entry into the gasometer, a valve of ordinary construction, operating so as to be closed by back-pressure from the gasometer, and opened by pressure from the carburetor, thereby preventing the escape of gas into apartments from the gas-holder.

Having thus described my invention, what I claim as novel, and desire to secure by Letters Patent, is

1. In a device for carbureting air or gas, the combination of the carburetor B, having a series of trays, induction, eduction, and filling pipes, of the connecting-pipes for each tray, and the meter-wheel having a.hollow shaft, through which an axial shaft passes and imparts motion to the meter-wheels by means of a pin or bolt passing therethrough, to one end of which is affixed a spring which is attached to the periphery of the wheel, whereby the force ofthe moving wheel is governed by the spring, substantially as set forth.

2. The combination of the carburetor B, fan- 'wheel 0, retort F, injector f, having back- THOMAS J. BRQUGH.

Witnesses:

SoLoN O. KEMoN, CHAS. A. PETTIT. 

